I am just learning about this reaction, but can anyone explain what is wrong with the following naive idea?

- Fire a stream of hydrogen ions with a particle accelerator at a chunk of Boron 11. - The hydrogen and boron combine and release heat and helium. - Use the heat from that to run a turbine and keep running your particle accelerator.

It seems like you would be ending up with lower-energy collection of atoms. Does that work but it is just not efficient enough to keep running the accelerator, or what?